Problem with sendmap

Hi, i tried sendmap for upload osm map on my garmin vista hcx, but i
have this error

luca <at> debianluca:~/programmi$ ./sendmap17Lstatic /dev/ttyUSB0
-u /home/luca/63240001.img 
GPS SendMap & GetMap version 17, Kozicki@...

Checking input files
Not a valid file: /home/luca/63240001.img

why i have this error?

thank's
Luca